After years under the radar, education standards draw criticism

In a photo from Sept. 14, 2012, Kristine Nannini points to her common core wall charts she created to her fifth grade class at McGrath Elementary in Grand Blanc, Mich. Nannini spent her summer creating her own charts and student data sheets. It was something she imagined other teachers across the nation would want. So she decided to cash in on her prep time and sell her materials on teacherspayteachers.com. (AP Photo/Carlos Osorio)

After years under the radar, education standards draw criticism

A set of common educational standards being rolled out across the country has swiftly become controversial in recent weeks.For years, the Common Core State Standards Initiative has been a bipartisan effort of governors that drew little criticism.But as it has been rolled out with the cooperation of the U.S. Department of Education, the standards have become a lightning rod for some conservative activists.Here's what you need to know.Governors started the Common Core effortFormer Michigan Gov. Jennifer Granholm (AP)The Common Core …